Surge protector with anti-off structure

ABSTRACT

A surge protector with an anti-off structure includes a pluggable module and a base. The base includes external terminal connection parts on both sides. The top of the external terminal connection part of the base is provided with a sliding limit device. Both sides of the pluggable module are provided with limit protruding blocks. The sliding limit device includes a hole cover, and the hole cover is slidably connected to the top of the external terminal connection part. When the pluggable module is completely inserted, a part of the hole cover protrudes into the pluggable module installation slot and is clamped with a fixing limit device of the pluggable module to limit the pluggable module from being detached from the base. When the pluggable module is removed, the hole cover is moved toward both sides, such that the hole cover is separated from the fixing limit device.

CROSS-REFERENCE TO THE RELATED APPLICATIONS

This application is the national phase entry of InternationalApplication No. PCT/CN2021/112582, filed on Aug. 13, 2021, which isbased upon and claims priority to Chinese Patent Application No.202022592346.9, filed on Nov. 11, 2020, the entire contents of which areincorporated herein by reference.

TECHNICAL FIELD

The present disclosure relates to the technical field of surgeprotectors, and more particularly, to a surge protector with an anti-offstructure.

BACKGROUND

To facilitate the replacement of failed components, a pluggablemechanism is adopted in the surge protector and includes a base and apluggable module of the surge protector. Additionally, the surgeprotector adopts a clamping manner to facilitate assembly, which canimprove assembly efficiency. To facilitate the insertion and removaloperation, the cooperation of the protruding point/protruding edge andthe groove is generally adopted. The insertion and removal of thepluggable module can be achieved by overcoming the resistance of thedeformation of the housing when the pluggable module of the surgeprotector needs to be inserted and removed. Therefore, the deformationresistance of the housing is generally made to be small, resulting in anunstable assembly. That is, once the cooperation of the clamping fails,the two parts are easily separated from each other.

SUMMARY

Given the above shortcomings in the prior art, an objective of thepresent disclosure is to provide a surge protector with an anti-offstructure to achieve a more reliable and stable clamping manner.

To achieve the above objective, the present disclosure provides a surgeprotector with an anti-off structure, including a pluggable module and abase. The base includes a pluggable terminal connection part at thebottom and external terminal connection parts on both sides. A pluggablemodule installation slot is formed in the middle of the base to guide apin of the pluggable module to insert into the pluggable terminalconnection part. The top of the external terminal connection part of thebase is provided with a sliding limit device, and both sides of thepluggable module are provided with a fixing limit device.

The direction of inserting the pluggable module into the base is definedas a downward direction.

The sliding limit device includes a hole cover, and the hole cover isslidably connected to the top of the external terminal connection part.When the pluggable module is completely inserted, a part of the holecover protrudes into the pluggable module installation slot and isclamped with the fixing limit device of the pluggable module to limitthe pluggable module from being detached from the base.

Further, the fixing limit device includes a limit protruding block, anda side of the hole cover facing the pluggable module installation slotis provided with a first positioning rib. In an anti-off state, thefirst positioning rib protrudes into the pluggable module installationslot and abuts the upper surface of the limit protruding block. In anunbuckled state, the first positioning rib slides to leave the pluggablemodule installation slot and separate from the limit protruding block.

In an embodiment, the sliding limit device further includes an elasticcomponent. The hole cover is slidably connected to the top of theexternal terminal connection part. Both ends of the elastic componentabut the hole cover and the top of the external terminal connectionpart, respectively, such that the elastic component has an acting forceto constantly drive the hole cover to slide horizontally toward thepluggable module installation slot.

Further, the top of the external terminal connection part is providedwith a receiving slot configured to place the elastic component, andboth ends of the elastic component abut the first positioning rib and asidewall of the receiving slot, respectively.

In another embodiment, the upper edge of the limit protruding block isprovided with a protrusion. When the pluggable module is inserted, thehole cover is slid to form a clamping between the first positioning ribof the hole cover and the protrusion to prevent the hole cover fromreturning. When the pluggable module is prepared to be removed, the holecover is slid to overcome the resistance of the clamping between thefirst positioning rib and the protrusion to allow the hole cover toseparate from the limit protruding block.

In the above embodiments, the fixing limit device further includes alimit shaft, and the side of the hole cover facing the pluggable moduleinstallation slot is provided with a limit slot. In the anti-off state,the limit shaft is clamped with the limit slot. In the unbuckled state,the limit shaft is separated from the limit slot. The structure isconfigured to enhance the anti-off strength further.

Further, a side of the hole cover away from the pluggable moduleinstallation slot is provided with a second positioning rib. A side ofthe top of the external terminal connection part away from the pluggablemodule installation slot is provided with a first limit edge portion anda second limit edge portion, where the first limit edge portion and thesecond limit edge portion are configured to be clamped with the secondpositioning rib for position limiting. The second limit edge portion islocated on the outer side of the first limit edge portion. When thesecond positioning rib of the hole cover is clamped with the first limitedge portion, the first positioning rib of the hole cover protrudes intothe pluggable module installation slot to form the anti-off state. Whenthe second positioning rib of the hole cover is clamped with the secondlimit edge portion, the first positioning rib of the hole cover leavesthe pluggable module installation slot to form the unbuckled state.

Further, the top of the external terminal connection part is providedwith a hole cover sliding slot, and the hole cover is provided with astructure corresponding to the hole cover sliding slot, such that thehole cover is allowed to slide horizontally at the top of the externalterminal connection part.

Further, the upper surface of the hole cover is provided with an actionpart, and the action part is configured to be operated manually to movethe hole cover away from the pluggable module installation slot.

Further, the lower surface of the limit protruding block is an inclinedsurface, and the inclined surface is configured to push away the slidinglimit device when the pluggable module is inserted into the base.

Further, guide slots and guide bars matched with each other are arrangedbetween both side edges of the pluggable module installation slot of thebase and both side edges of the pluggable module to guide the pluggablemodule to insert into the pluggable module installation slot.

Compared with the prior art, the advantages of the present disclosureare as follows:

According to the present disclosure, the anti-off function of the surgeprotector is achieved through the cooperation of slidable hole coversarranged at the tops of both sides of the base of the surge protectorand the limit protruding blocks arranged on both sides of the pluggablemodule. Specifically, when the pluggable module of the surge protectoris completely inserted into the base, a part of the hole cover slides toprotrude into the pluggable module installation slot and abuts the uppersurface of the limit protruding block, to prevent the pluggable modulefrom being detached from the base. When the pluggable module is removed,the part of the hole cover previously protruding into the pluggablemodule installation slot is returned through sliding, thereby separatingfrom the limit protruding block to allow the pluggable module to befreely removed from the base. The structure is stable and reliable, andthe pluggable module cannot be pulled out from the base when theanti-off structure is not unbuckled.

BRIEF DESCRIPTION OF THE DRAWINGS

To more clearly illustrate the technical solution in the embodiments ofthe present disclosure or the related technology, the drawings requiredto be used in the description of the embodiments or related technologyare introduced briefly below. It will become apparent that the drawingsdescribed below are some of the embodiments of the present disclosure.For those having ordinary skills in the art, additional drawings mayalso be obtained from the drawings without creative labor.

FIG. 1 is an exploded view of a surge protector of an embodiment of thepresent disclosure;

FIG. 2 is a schematic diagram showing the structure of a base body of abase in FIG. 1 ;

FIG. 3 is a schematic diagram showing the structure of a hole cover inFIG. 2 ;

FIG. 4 is a cross-sectional view of the surge protector in an anti-offstate in FIG. 1 ;

FIG. 5 is a schematic diagram showing the structure of the surgeprotector in the anti-off state in FIG. 1 ;

FIG. 6 is a partially enlarged view of detail A circled in FIG. 5 ;

FIG. 7 is a schematic diagram showing the structure of the surgeprotector in an unbuckled state in FIG. 1 ;

FIG. 8 is a partially enlarged view of detail B circled in FIG. 7 ;

FIG. 9 is a schematic diagram showing the structure of a surge protectorin an anti-off state of another embodiment; and

FIG. 10 is a partially enlarged view of detail C circled in FIG. 9 .

DETAILED DESCRIPTION OF THE EMBODIMENTS

The present disclosure provides the drawings for further illustration ofthe embodiments. The drawings, which are a part of the specification ofthe present disclosure, are mainly used to explain the embodiments andcan be used to explain the operation principle of the embodiments incooperation with the relevant description of the specification. Withreference to these contents, those having ordinary skills in the artshould be able to understand other possible embodiments and theadvantages of the present disclosure. The components in the drawings arenot drawn in proportion, and similar component symbols are often used torepresent similar components.

The present disclosure is further explained in combination with thedrawings and the specific embodiments.

Embodiment 1

As shown in FIGS. 1-8 , the present disclosure discloses a specificembodiment of a surge protector, including the base 1 and the pluggablemodule 2. The surge protector is provided with an anti-off structure toprevent the well-placed pluggable module 2 from being detached from thebase 1. The explanation is as follows:

In the embodiment, the base 1 includes the U-shaped base body 11, a pairof springs 12, and a pair of hole covers 13.

The base body 11 includes the pluggable terminal connection part at thebottom and the external terminal connection parts on both sides. Thepluggable module installation slot 14 is formed in the middle of thebase body 11 to guide the pin of the pluggable module 2 to insert intothe pluggable terminal connection part. Each of the external terminalconnection parts on both sides of the base body 11 is provided with thescrew operation hole 111 downward from the top.

The pair of hole covers 13 are respectively arranged at the tops of theexternal terminal connection parts on both sides of the base body 11.The through hole 135 is formed in the middle of the hole cover 13, andthe through hole 135 is communicated with the screw operation hole 111,such that the setting of the hole cover 13 does not affect thescrewdriver to extend into the screw operation hole 111 to connect theexternal terminal. The top of the external terminal connection part isprovided with the spring receiving slot 112, the hole cover sliding slot113, the first limit edge portion 114, and the second limit edge portion115 to connect to the sliding limit device formed by the spring 12 andthe hole cover 13. Specifically, the second limit edge portion 115 isarranged on the outer side of the first limit edge portion 114. Bothsides of the pluggable module installation slot 14 are further providedwith the guide slots 116.

Two ends of the hole cover 13 bend downward to form the firstpositioning rib 131 and the second positioning rib 132. The hole cover13 is further provided with a structure corresponding to the hole coversliding slot 113, such that the hole cover 13 is allowed to slidehorizontally at the top of the external terminal connection part.

The spring 12 is arranged in the spring receiving slot 112. One end ofthe spring 12 abuts the side of the spring receiving slot 112, and theother end of the spring 12 abuts the first positioning rib 131 of thehole cover 13, such that the spring 12 has an acting force to constantlydrive the hole cover 13 to slide horizontally toward the pluggablemodule installation slot 14.

To limit the sliding of the hole cover 13, the second positioning rib132 of the hole cover 13 is clamped with the first limit edge portion114 or the second limit edge portion 115 on the outer side (that is,away from the pluggable module installation slot 14) of the top of theexternal terminal connection part to form an anti-off state or anunbuckled state. The second limit edge portion 115 is located on theouter side of the first limit edge portion 114.

In the embodiment, the pluggable module 2 includes the pluggable modulehousing 21, the limit protruding blocks 22 and the guide bars 23arranged on two side surfaces of the pluggable module housing 21, thefirst pin 24 and the second pin 25 configured to electrically connectthe pluggable module 2, and the pluggable terminal connection part ofthe base 1.

In an anti-off state, the first positioning rib 131 of the hole cover 13protrudes into the pluggable module installation slot 14 of the base 1and abuts the upper surface of the limit protruding block 22 of thepluggable module 2 to limit the pluggable module 2 to move upward forremoving from the pluggable module installation slot 14 of the base 1.See FIGS. 5-6 .

In an unbuckled state, the hole cover 13 moves away from the pluggablemodule installation slot 14, the second positioning rib 132 moves to beclamped with the second limit edge portion 115, such that the firstpositioning rib 131 of the hole cover 13 leaves the pluggable moduleinstallation slot 14, thereby separating from the upper surface of thelimit protruding block 22 of the pluggable module 2 and releasing thelimitation on the removal of the pluggable module 2 from the base 1. SeeFIGS. 7-8 .

The upper surface of the limit protruding block 22 defines a planar oran approximately planar surface. The lower surface of the limitprotruding block 22 is an inclined surface, and the angle between theinclined surface and the side surface of the pluggable module is135°-150°.

When the pluggable module 2 is inserted, the limit protruding blocks 22of the pluggable module 2 can push away the hole covers 13 through theinclined surfaces, such that the pins of the pluggable module 2 arecompletely inserted into the base 1. When the pins of the pluggablemodule 2 are already completely inserted into the base, the limitprotruding blocks 22 move to be located below the hole covers 13, andthe hole covers 13 move horizontally to be located above the limitprotruding blocks 22 under the action of the springs 12 and abut theupper surfaces of the limit protruding blocks 22. At the same time, theanti-off state is maintained under the action of the springs 12 toachieve a reliable connection. When the pluggable module 2 needs to beremoved from the base 1, the hole covers 13 on both sides are manuallymoved toward both sides, and then the second positioning ribs 132 of thehole covers 13 are clamped with the second limit edge portions 115, suchthat the first positioning ribs 131 of the hole covers 13 on both sidesleave the pluggable module installation slot 14 to form the unbuckledstate. At this time, the pluggable module 2 can be freely removed fromthe base 1.

In the embodiment, the pluggable module 2 is further provided with thelimit shaft 26. The side of the hole cover 13 facing the pluggablemodule installation slot 14 is provided with the limit slot 133, and theopening of the limit slot 133 faces the pluggable module installationslot 14. In the anti-off state, the limit shaft 26 is clamped with thelimit slot 133. In the unbuckled state, the limit shaft 26 is separatedfrom the limit slot 133.

In the embodiment, to facilitate the sliding of the hole cover 13 whenthe pluggable module 2 is removed, the upper surface of the hole coveris provided with the action part 134. Specifically, the action part 134is a protruding structure. The operator can exert force through theaction part 134 to drive the hole cover 13 to slide to the outer side toachieve the unbuckled state. Specifically, the structure of the actionpart 134 includes, but is not limited, to a protrusion, a ridge, agroove, etc., as long as it is convenient for the operator to exertforce.

In the embodiment, to avoid affecting the setting of the sliding limitdevice, the guide slots 116 of the pluggable module installation slot 14are arranged at both side edges of the pluggable module installationslot 14, and correspondingly, both side edges of the pluggable module 2are provided with the guide bars 23 to guide the pluggable module toinsert into the pluggable module installation slot 14.

In the embodiment, the anti-off function of the surge protector isachieved by the cooperation of the slidable hole covers and the springsarranged at the tops of the external terminal connection parts on bothsides of the base of the surge protector, and the limit protrudingblocks arranged on both sides of the pluggable module. The structure isstable and reliable, and the pluggable module cannot be pulled out fromthe base when the anti-off structure is not unbuckled.

Embodiment 2

As shown in FIGS. 9 and 10 , the present disclosure discloses anotherembodiment of the surge protector. The difference between thisembodiment and Embodiment 1 is the clamping manner of the hole cover 13and the pluggable module 2.

In the embodiment, the upper edge of the limit protruding block 22 ofthe pluggable module 2 is provided with the protrusion 221, and nospring is arranged between the hole cover 13 and the base body 11, suchthat the inward and outward sliding of the hole cover 13 requires manualoperation. When the pluggable module 2 is inserted, the firstpositioning rib 131 of the hole cover 13 is clamped with the protrusion221 by manually sliding the hole cover 13 to prevent the hole cover 13from returning. Therefore, the anti-off state is maintained to achieve areliable connection.

In the embodiment, the anti-off function of the surge protector isachieved by the cooperation of the slidable hole covers arranged at thetops of the external terminal connection parts on both sides of the baseof the surge protector, the limit protruding blocks arranged on bothsides of the pluggable module and the protrusions arranged on the upperedges of the limit protruding blocks. The structure is stable andreliable, and the pluggable module cannot be pulled out from the basewhen the anti-off structure is not unbuckled.

Although the present disclosure is specifically demonstrated andintroduced in conjunction with the preferred implementation solutions,those skilled in the art should understand that without departing fromthe spirit and scope of the present disclosure as defined in theappended claims, various changes may be made to the present disclosurein forms and details, which all shall fall within the scope ofprotection of the present disclosure.

The terms “an embodiment,” “embodiments,” or “one or more embodiments”in this text mean that a particular feature, structure, orcharacteristic described in combination with the embodiments is includedin at least one embodiment of the present disclosure. Furthermore, itshould be noted that the term “in the embodiment” here does notnecessarily all refer to the same embodiment.

The specification provided here discloses many details. However, itshould be understood that the embodiments in the present disclosure canbe practiced without these specific details. In some embodiments, themethods, structures, and techniques known to the public are not shown indetail to not obscure the specification's understanding.

What is claimed is:
 1. A surge protector with an anti-off structure,comprising a pluggable module and a base; wherein the base comprises apluggable terminal connection part at a bottom of the base and anexternal terminal connection part on each of both sides of the base; apluggable module installation slot is formed in a middle of the base toguide a pin of the pluggable module to insert into the pluggableterminal connection part; a top of the external terminal connection partof the base is provided with a sliding limit device, and each of bothsides of the pluggable module is provided with a fixing limit device; adirection of inserting the pluggable module into the base is defined asa downward direction; and the sliding limit device comprises a holecover, and the hole cover is slidably connected to the top of theexternal terminal connection part; when the pluggable module iscompletely inserted, a part of the hole cover protrudes into thepluggable module installation slot and is clamped with the fixing limitdevice of the pluggable module, to limit the pluggable module from beingdetached from the base.
 2. The surge protector with the anti-offstructure according to claim 1, wherein the fixing limit devicecomprises a limit protruding block, and a first side of the hole coveris provided with a first positioning rib, wherein the first side of thehole cover faces the pluggable module installation slot; in an anti-offstate, the first positioning rib protrudes into the pluggable moduleinstallation slot and abuts an upper surface of the limit protrudingblock; in an unbuckled state, the first positioning rib slides to leavethe pluggable module installation slot and separate from the limitprotruding block.
 3. The surge protector with the anti-off structureaccording to claim 2, wherein the sliding limit device further comprisesan elastic component; the hole cover is slidably connected to the top ofthe external terminal connection part; both ends of the elasticcomponent abut the hole cover and the top of the external terminalconnection part, respectively, wherein the elastic component has anacting force to constantly drive the hole cover to slide horizontallytoward the pluggable module installation slot.
 4. The surge protectorwith the anti-off structure according to claim 3, wherein the top of theexternal terminal connection part is provided with a receiving slotconfigured to place the elastic component, and both ends of the elasticcomponent abut the first positioning rib and a sidewall of the receivingslot, respectively.
 5. The surge protector with the anti-off structureaccording to claim 2, wherein an upper edge of the limit protrudingblock is provided with a protrusion; when the pluggable module isinserted, the hole cover is slid to form a clamping between the firstpositioning rib of the hole cover and the protrusion to prevent the holecover from returning; when the pluggable module is prepared to beremoved, the hole cover is slid to overcome a resistance of the clampingbetween the first positioning rib and the protrusion to allow the holecover to separate from the limit protruding block.
 6. The surgeprotector with the anti-off structure according to claim 2, wherein thefixing limit device further comprises a limit shaft, and the first sideof the hole cover is provided with a limit slot; in the anti-off state,the limit shaft is clamped with the limit slot; in the unbuckled state,the limit shaft is separated from the limit slot.
 7. The surge protectorwith the anti-off structure according to claim 2, wherein a second sideof the hole cover is provided with a second positioning rib, wherein thesecond side of the hole cover is away from the pluggable moduleinstallation slot; a side of the top of the external terminal connectionpart is provided with a first limit edge portion and a second limit edgeportion, wherein the side of the top of the external terminal connectionpart is away from the pluggable module installation slot, and the firstlimit edge portion and the second limit edge portion are configured tobe clamped with the second positioning rib for a position limiting; thesecond limit edge portion is located on an outer side of the first limitedge portion; when the second positioning rib of the hole cover isclamped with the first limit edge portion, the first positioning rib ofthe hole cover protrudes into the pluggable module installation slot toform the anti-off state; when the second positioning rib of the holecover is clamped with the second limit edge portion, the firstpositioning rib of the hole cover leaves the pluggable moduleinstallation slot to form the unbuckled state.
 8. The surge protectorwith the anti-off structure according to claim 2, wherein the top of theexternal terminal connection part is provided with a hole cover slidingslot, and the hole cover is provided with a structure corresponding tothe hole cover sliding slot, such that the hole cover is allowed toslide horizontally at the top of the external terminal connection part.9. The surge protector with the anti-off structure according to a claim2, wherein an upper surface of the hole cover is provided with an actionpart, and the action part is configured to be operated manually to movethe hole cover away from the pluggable module installation slot.
 10. Thesurge protector with the anti-off structure according to claim 2,wherein a lower surface of the limit protruding block is an inclinedsurface, and the inclined surface is configured to push away the holecover when the pluggable module is inserted into the pluggable moduleinstallation slot.
 11. The surge protector with the anti-off structureaccording to claim 3, wherein a second side of the hole cover isprovided with a second positioning rib, wherein the second side of thehole cover is away from the pluggable module installation slot; a sideof the top of the external terminal connection part is provided with afirst limit edge portion and a second limit edge portion, wherein theside of the top of the external terminal connection part is away fromthe pluggable module installation slot, and the first limit edge portionand the second limit edge portion are configured to be clamped with thesecond positioning rib for a position limiting; the second limit edgeportion is located on an outer side of the first limit edge portion;when the second positioning rib of the hole cover is clamped with thefirst limit edge portion, the first positioning rib of the hole coverprotrudes into the pluggable module installation slot to form theanti-off state; when the second positioning rib of the hole cover isclamped with the second limit edge portion, the first positioning rib ofthe hole cover leaves the pluggable module installation slot to form theunbuckled state.
 12. The surge protector with the anti-off structureaccording to claim 4, wherein a second side of the hole cover isprovided with a second positioning rib, wherein the second side of thehole cover is away from the pluggable module installation slot; a sideof the top of the external terminal connection part is provided with afirst limit edge portion and a second limit edge portion, wherein theside of the top of the external terminal connection part is away fromthe pluggable module installation slot, and the first limit edge portionand the second limit edge portion are configured to be clamped with thesecond positioning rib for a position limiting; the second limit edgeportion is located on an outer side of the first limit edge portion;when the second positioning rib of the hole cover is clamped with thefirst limit edge portion, the first positioning rib of the hole coverprotrudes into the pluggable module installation slot to form theanti-off state; when the second positioning rib of the hole cover isclamped with the second limit edge portion, the first positioning rib ofthe hole cover leaves the pluggable module installation slot to form theunbuckled state.
 13. The surge protector with the anti-off structureaccording to claim 5, wherein a second side of the hole cover isprovided with a second positioning rib, wherein the second side of thehole cover is away from the pluggable module installation slot; a sideof the top of the external terminal connection part is provided with afirst limit edge portion and a second limit edge portion, wherein theside of the top of the external terminal connection part is away fromthe pluggable module installation slot, and the first limit edge portionand the second limit edge portion are configured to be clamped with thesecond positioning rib for a position limiting; the second limit edgeportion is located on an outer side of the first limit edge portion;when the second positioning rib of the hole cover is clamped with thefirst limit edge portion, the first positioning rib of the hole coverprotrudes into the pluggable module installation slot to form theanti-off state; when the second positioning rib of the hole cover isclamped with the second limit edge portion, the first positioning rib ofthe hole cover leaves the pluggable module installation slot to form theunbuckled state.
 14. The surge protector with the anti-off structureaccording to claim 6, wherein a second side of the hole cover isprovided with a second positioning rib, wherein the second side of thehole cover is away from the pluggable module installation slot; a sideof the top of the external terminal connection part is provided with afirst limit edge portion and a second limit edge portion, wherein theside of the top of the external terminal connection part is away fromthe pluggable module installation slot, and the first limit edge portionand the second limit edge portion are configured to be clamped with thesecond positioning rib for a position limiting; the second limit edgeportion is located on an outer side of the first limit edge portion;when the second positioning rib of the hole cover is clamped with thefirst limit edge portion, the first positioning rib of the hole coverprotrudes into the pluggable module installation slot to form theanti-off state; when the second positioning rib of the hole cover isclamped with the second limit edge portion, the first positioning rib ofthe hole cover leaves the pluggable module installation slot to form theunbuckled state.
 15. The surge protector with the anti-off structureaccording to claim 3, wherein the top of the external terminalconnection part is provided with a hole cover sliding slot, and the holecover is provided with a structure corresponding to the hole coversliding slot, such that the hole cover is allowed to slide horizontallyat the top of the external terminal connection part.
 16. The surgeprotector with the anti-off structure according to claim 4, wherein thetop of the external terminal connection part is provided with a holecover sliding slot, and the hole cover is provided with a structurecorresponding to the hole cover sliding slot, such that the hole coveris allowed to slide horizontally at the top of the external terminalconnection part.
 17. The surge protector with the anti-off structureaccording to claim 5, wherein the top of the external terminalconnection part is provided with a hole cover sliding slot, and the holecover is provided with a structure corresponding to the hole coversliding slot, such that the hole cover is allowed to slide horizontallyat the top of the external terminal connection part.
 18. The surgeprotector with the anti-off structure according to claim 6, wherein thetop of the external terminal connection part is provided with a holecover sliding slot, and the hole cover is provided with a structurecorresponding to the hole cover sliding slot, such that the hole coveris allowed to slide horizontally at the top of the external terminalconnection part.
 19. The surge protector with the anti-off structureaccording to claim 3, wherein an upper surface of the hole cover isprovided with an action part, and the action part is configured to beoperated manually to move the hole cover away from the pluggable moduleinstallation slot.
 20. The surge protector with the anti-off structureaccording to claim 4, wherein an upper surface of the hole cover isprovided with an action part, and the action part is configured to beoperated manually to move the hole cover away from the pluggable moduleinstallation slot.